Unicorn Engine VS macOS-Simple-KVM

OFRAK Tetris is a project I started at work about two weeks ago. It's a web-based game that works on desktop and mobile. I made it for my company to bring to events like DEF CON, and to promote our binary analysis and patching framework called OFRAK.

In the game, 32-bit, little-endian ARM assembly instructions fall, and you can modify the operands before executing them on a CPU emulator. There are two segments mapped – one for instructions, and one for data (though both have read, write, and execute permissions). Your score is a four byte signed integer stored at the virtual address pointed to by the R12 register, and the goal is to use the instructions that fall to make the score value in memory as high as possible. When it's game over, you can download your game as an ELF to relive the glory in GDB on your favorite ARM device.

The CPU emulator is a version of Unicorn (https://www.unicorn-engine.org/) that has been cross-compiled to WebAssembly (https://alexaltea.github.io/unicorn.js/), so everything on the page runs in the browser without the need for any complicated infrastructure on the back end.

Since I've only been working on this for a short period of time leading up to its debut at DEF CON, there are still many more features I'd eventually like to implement. These include adding support for other ISAs besides ARM, adding an instruction reference manual, and lots of little cleanups, bug fixes, and adjustments.

My highest score is 509,644,979, but my average is about 131,378.

I look forward to feedback, bug reports, feature requests, and strategy discussions!

Entails hundreds of hours of single-stepping through that opcode in Linux kernel using an indirect operand pointing toward its own opcode (self-modifying code).

Even the extraordinaire Fabrice Bellard (author of QEMU) admitted that it is broke and did a total rewrite, which fixed tons of other issues.

https://github.com/unicorn-engine/unicorn/issues/364

Macdu (Vita3K dev) also stated that this game is CPU bound so they used a CPU emulator known as unicorn2 , this is also the reason for the slow speed

This is how I found out a snippet of assembly code that can actually distinguished between a KVM hypervisor and most of today’s emulator.

https://github.com/unicorn-engine/unicorn/issues/364

I'm a 30 year linux veteran and windows free for over 22. I di d have a windows vm for some time because I have some music stuff that doesn't work with linux, like a nord keyboard and some guitar stuff.

But i burnt the vm with fire when I found https://github.com/foxlet/macOS-Simple-KVM

I've heard a lot of buzz for MacOS-Simple-KVM but I see there hasb't been an update in 3 years.

You could always get a regular PC laptop, install linux on it and run your macos/windows vms via https://github.com/foxlet/macOS-Simple-KVM qemu kvm, supports full hardware acceleration and should be able to do nested vms just fine, i run a macos vm on my desktop for work and a hardware accelerated windows vm for gaming

Then, i came across this tool https://github.com/foxlet/macOS-Simple-KVM. However, it seems like it's asking me to install a different package for QEMU. sudo apt-get install qemu-system qemu-utils python3 python3-pip. Thankfully, I was able to create a Mac VM with this tool.

His github project " https://github.com/foxlet/macOS-Simple-KVM "

git clone https://github.com/foxlet/macOS-Simple-KVM.git /home/Downloads

You can virtualize mac os, but I would call it easy

I did the Windows passthrough with some problems but I got it to work and then I attempted MacOS for fun and it went down hill from there. Following this guide https://github.com/kholia/OSX-KVM I installed it no problem without passthrough then realised my 3060ti wouldn't work so I installed an old RX580 laying around and decided to passthrough that, when I did it hung, tried blacklisting the AMD drivers on host, amongst other things and I couldn't get it to work. I then switched to this guide using clover https://github.com/foxlet/macOS-Simple-KVM as I heard that might work and nope it hung again.